CN206997264U - A kind of auxiliary vapour purging system not restricted before unit starting by steam - Google Patents
A kind of auxiliary vapour purging system not restricted before unit starting by steam Download PDFInfo
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- CN206997264U CN206997264U CN201720800678.7U CN201720800678U CN206997264U CN 206997264 U CN206997264 U CN 206997264U CN 201720800678 U CN201720800678 U CN 201720800678U CN 206997264 U CN206997264 U CN 206997264U
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Abstract
The utility model discloses the auxiliary vapour purging system not restricted before a kind of unit starting by steam, and it solves the problems, such as that purging pipeline installation workload is big in the prior art, waste of steam is more, the beneficial effect of steam saving few with installation, and its scheme is as follows：Auxiliary vapour purging system includes auxiliary vapour header, and auxiliary vapour header is connected by steam turbine pre-warm pipeline with steam turbine, and auxiliary vapour header is also connected to pipeline with steam turbine again by cold, and steam turbine is connected with cold again to the interim main pipe pipeline of auxiliary vapour purging；Auxiliary vapour header is connected by axle envelope pipeline with axle envelope purging system, and auxiliary vapour header is connected by auxiliary vapour to oxygen-eliminating device pipeline with oxygen-eliminating device, and auxiliary vapour header is evacuated to auxiliary steam pipe road by four and is connected with oxygen-eliminating device, and oxygen-eliminating device is connected with four and takes out pipeline.
Description
Technical field
Band steam feed pump Turbo-generator Set is the utility model is related to, more particularly to not steamed before a kind of unit starting
The auxiliary vapour purging system that vapour restricts.
Background technology
Common steam system of the unit Auxiliary Steam as whole plant, the system sets an auxiliary vapour header, for unit
Each user's vapour.The auxiliary vapour user in steam turbine side mainly has：Oxygen-eliminating device heating vapour, feed pump turbine debugging vapour, axle envelope are used
Vapour etc..The main vapour source of Auxiliary Steam is from cold section of reheating, four sections of steam turbine draws gas, starting trouble and as the occasion requires or old factory carrys out vapour,
Start vapour source from starting trouble, as the occasion requires or old factory's auxiliary steam, steam parameter are generally pressure 0.8-1.2MPa, temperature 300
DEG C or so.Auxiliary Steam, because Auxiliary Steam inner surface of pipeline produces corrosion, is welded to connect simultaneously before coming into operation
Inner surface residual welding slag, dust and dirt etc. afterwards, the user such as steam turbine gland system, feed pump turbine debugging vapour, oxygen-eliminating device vapour
Higher is required to steam quality, therefore steam blowing must be carried out to Auxiliary Steam in the installation and debugging stage, due to auxiliary
Vapour system user is more, and each user pipe connection is more complicated, when general unit purges to Auxiliary Steam, takes each use
Family individually purges, and waits a user to purge and completes, could be this user isolation after externally emptying temporary pipeline cooling, will be external
Emptying temporary pipeline is attached to next user and purged, and this is that steam blowing brings larger difficulty, not only increases auxiliary and steams
Vapour system purges pipeline installation workload temporarily, even more wastes a large amount of steam.
Utility model content
For overcome the deficiencies in the prior art, the utility model provide before a kind of unit starting do not restricted by steam it is auxiliary
Vapour purging system, simplifies temporary system Pipe installing before the auxiliary vapour system purge in unit steam turbine side, simplifies sweeping process during purging,
Save a large amount of steam.
A kind of concrete scheme for the auxiliary vapour purging system not restricted before unit starting by steam is as follows：
A kind of auxiliary vapour purging system not restricted before unit starting by steam, including：
Auxiliary vapour header, auxiliary vapour header are connected by steam turbine pre-warm pipeline with steam turbine, auxiliary vapour header also by it is cold again extremely
Pipeline is connected with steam turbine, and steam turbine is connected with cold again to the interim main pipe pipeline of auxiliary vapour purging；Auxiliary vapour header passes through auxiliary vapour to axle
Tube sealing road is connected with axle envelope purging system, and auxiliary vapour header is connected by auxiliary vapour to oxygen-eliminating device pipeline with oxygen-eliminating device, and auxiliary vapour header leads to
Cross four and be evacuated to auxiliary steam pipe road and be connected with oxygen-eliminating device, oxygen-eliminating device is connected with four and takes out pipeline, and auxiliary vapour to oxygen-eliminating device pipeline and four takes out pipeline
Pipeline temporary pipeline is taken out by auxiliary vapour to oxygen-eliminating device pipeline to four to connect, four take out pipeline by small machine low-pressure admission pipeline with being connected
It is cold to purge interim main pipe pipeline connection to auxiliary vapour again.
Above-mentioned purging system, power plant's Auxiliary Steam pipeline cloth is taken into full account before unit Auxiliary Steam purging
Put, all auxiliary vapour users are only connected together carry out steam blowing by main pipe in the confined space, not only simplify interim pipe
Road is arranged, more disposably can all have been blown all auxiliary steam users in steam turbine side when auxiliary steam purges, and saves a large amount of steam
Vapour.
Small machine low-pressure admission pipeline purges interim main pipe pipeline by the first pipeline and small machine high-pressure admission pipeline to auxiliary vapour
Connection；
Further, control for convenience, the first pipeline sets four to be evacuated to the small machine non-return flaps of A, four to be evacuated to A small electromechanical dynamic
Isolating door and the small machine high-pressure admission electric isolating valves of A.
The small machine low-pressure admission pipeline is also purged interim female by second pipe and small machine high-pressure admission pipeline to auxiliary vapour
Pipeline connects；
Further, set four to be evacuated to the small machine non-return flaps of B in second pipe, four be evacuated to the small machine electric isolating valves of B and the small machines of B
High-pressure admission electric isolating valve.
The auxiliary vapour header is connected with small machine debugging steam pipe road, and small machine debugging is set between steam pipe road and the first pipeline
There is auxiliary vapour header to the manual isolating door of the small machines of A and auxiliary vapour header to the small machine non-return flaps of A.
The auxiliary vapour header is connected with small machine debugging steam pipe road, and small machine debugging is set between steam pipe road and second pipe
There is auxiliary vapour header to the manual isolating door of the small machines of B and auxiliary vapour header to the small machine non-return flaps of B, non-return flap is used to prevent steam anti-after opening
To flowing.
The auxiliary vapour header is connected with starting jet chimney, is started jet chimney and is connected with starting trouble or heat engine, or
Start jet chimney to connect with old factory's auxiliary steam pipeline；
Further, jet chimney is being started provided with startup jet chimney to auxiliary vapour header electrically operated gate.
The axle envelope purging system purges interim main pipe pipeline with cold again to auxiliary by gland seal system steam exhaust piping to auxiliary vapour
Vapour purges interim main pipe pipeline communication, and form exhaust outlet after UNICOM communicates with air.
It is described cold again to the interim main pipe pipeline of auxiliary vapour purging provided with the interim low-lying place's drain water piping of main pipe of auxiliary vapour purging, auxiliary vapour
Purge the low-lying place's drain water piping of interim main pipe and be provided with the hydrophobic manually operated door of temporary pipeline.
Described four, which are evacuated to auxiliary steam pipe road, is evacuated to auxiliary vapour header manually operated door and four provided with four and is evacuated to auxiliary vapour header non-return flap；
Further, steam turbine pre-warm pipeline is provided with auxiliary vapour header to the manual isolating door of steam turbine pre-warm pipeline；
Further, it is cold be provided with again to pipeline it is cold again to the manual isolating door of auxiliary vapour header, cold again to auxiliary vapour header non-return flap
With cold again to auxiliary vapour header electric isolating valve.
In auxiliary vapour to oxygen-eliminating device pipeline from auxiliary vapour header to being sequentially provided with electricity before auxiliary vapour header to oxygen-eliminating device oxygen-eliminating device
Dynamic door, auxiliary vapour header to electrically operated gate after oxygen-eliminating device and auxiliary vapour header to oxygen-eliminating device non-return flap, auxiliary vapour is taken out to oxygen-eliminating device pipeline to four
Pipeline temporary pipeline sets four to be evacuated to the oxygen-eliminating device fast valve and four that draws gas and is evacuated to oxygen-eliminating device non-return flap；In small machine debugging steam pipe road
Auxiliary vapour header is set to small machine debugging vapour manually operated door；Auxiliary vapour header is set gradually to gland seal system electricity in auxiliary vapour to axle envelope pipeline
Door and auxiliary vapour header are moved to gland seal system non-return flap.
Using the auxiliary vapour blowing method not restricted before a kind of unit starting of said system by steam, comprise the following steps that：
1) company of all parts is carried out according to the auxiliary vapour purging system not restricted before a kind of described unit starting by steam
Connect；
2) confirm that starting jet chimney to auxiliary vapour header electrically operated gate is closed；
3) confirm that four are evacuated to oxygen-eliminating device non-return flap, four are evacuated to auxiliary vapour header non-return flap, cold again to auxiliary vapour header non-return flap,
It is counter to fill and remove valve element, confirm auxiliary vapour header to oxygen-eliminating device non-return flap, auxiliary vapour header to gland seal system non-return flap, auxiliary vapour header
To the small machines of A (A steam feed pumps steam turbine) non-return flap, auxiliary vapour header to the small machines of B (B steam feed pumps steam turbine) non-return flap, four
The small machine non-return flaps of A are evacuated to, four are evacuated to the small machine non-return flaps of B, have removed valve element；Non-return valve anti-the reason for filling is：Non-return valve has
The unidirectional function of crossing vapour, because there is pipeline all to need to be reversed purging, it is therefore desirable to counter to fill non-return valve；
4) confirm that gland seal system enters steam exhaust piping short circuit, all filter screens have removed；Unit is in axle envelope construction stage, axle
Envelope steam inlet pipe road is equipped with the filter screen for preventing impurity from entering turbine shaft seal, to ensure that this filter screen has been removed in purge stages, otherwise
The resistance of ducting, which can be increased, influences purging effect, and more serious meeting blows filter screen bad；
5) the first hydrophobic manually operated door of standard-sized sheet temporary pipeline, then remaining electrically operated gate and manually operated door in gradual standard-sized sheet system；
6) it is crack to open dynamic jet chimney to auxiliary vapour header electrically operated gate to whole system progress heating coil；
7) steam drain and all tube wall temperatures are tested, when steam drain and tube wall temperature are all higher than 200 DEG C, system
Heating coil terminates, and fully closed auxiliary vapour header to oxygen-eliminating device bypasses electrically operated gate, auxiliary vapour header to electrically operated gate before oxygen-eliminating device, auxiliary vapour header to axle
Envelope system electrically operated gate, for auxiliary vapour header to small machine debugging vapour manually operated door, four are evacuated to auxiliary vapour header manually operated door, cold again to auxiliary vapour header
Manual isolating door, auxiliary vapour header to the manual isolating door of steam turbine pre-warm pipeline；
8) by rate-determining steps 7) valve closed, each branch road is purged successively, each branch road purges 3-5 times, often
The time of secondary purging setting, until steam drain steam free from admixture is taken i.e. purging out of and completed.
Compared with prior art, the beneficial effects of the utility model are：
1) the utility model can be before unit steam turbine side Auxiliary Steam purging, by each user of steam turbine side auxiliary steam
Short circuit is carried out by temporary pipeline, steam is discharged into air after auxiliary vapour header by each user, then by discharging main pipe temporarily,
Can be by corrosion caused by Auxiliary Steam inner surface of pipeline, while rear inner surface residual welding slag, dust and dirt etc. are welded to connect, all
Blow away.
2) the utility model purging system is simple in construction, quickly can carry out steam blowing to auxiliary vapour user, saves a large amount of steam
Vapour.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrate be used for explain the application, do not form the improper restriction to the application.
Fig. 1 is the utility model structure diagram；
In figure：1 starts jet chimney to auxiliary vapour header electrically operated gate；2 auxiliary vapour headers to oxygen-eliminating device bypasses electrically operated gate；3 auxiliary vapour
Header is to oxygen-eliminating device non-return flap；4 auxiliary vapour headers are to electrically operated gate after oxygen-eliminating device；5 auxiliary vapour headers are to electrically operated gate before oxygen-eliminating device, 6 auxiliary vapour
Header is to gland seal system electrically operated gate, 7 auxiliary vapour headers to gland seal system non-return flap, 8 auxiliary vapour headers to small machine debugging vapour manually operated door,
9 four, which are evacuated to oxygen-eliminating device, draws gas fast valve, and 10 4 are evacuated to oxygen-eliminating device non-return flap, and 11 4 are evacuated to auxiliary vapour header non-return flap, and 12 4 are evacuated to
Auxiliary vapour header manually operated door, the small machine high-pressure admission electric isolating valves of 13A, the small machine high-pressure admission electric isolating valves of 14B, 15 auxiliary vapour headers
To the manual isolating door of the small machines of A, 16 auxiliary vapour headers to the small machine non-return flaps of A, 17 is cold again to the auxiliary manual isolating door of vapour header, 18 auxiliary vapour connection
Case is inverse to the small machines of B to the manual isolating door of steam turbine pre-warm pipeline, 19 auxiliary vapour headers to the manual isolating door of the small machines of B, 20 auxiliary vapour headers
Only door, 21 it is cold again to auxiliary vapour header non-return flap, 22 4 are evacuated to the small machine electric isolating valves of A, and 23 4 are evacuated to the small machine electric isolating valves of B,
24 is cold again to auxiliary vapour header electric isolating valve, and 25 4 are evacuated to the small machine non-return flaps of A, and 26 4 are evacuated to the small machine non-return flaps of B, 27 temporary pipelines
Hydrophobic manually operated door, 28 small machine high-pressure admission pipelines to auxiliary vapour purge interim main pipe pipeline (carbon steel material), and 29 cold extremely auxiliary vapour again blow
Interim main pipe pipeline (carbon steel material) is swept, 30 auxiliary vapour purge the interim low-lying place's drain water piping (carbon steel material) of main pipe, and 31 auxiliary vapour are extremely
Oxygen-eliminating device pipeline takes out pipeline temporary pipeline (carbon steel material) to four, and 32 gland seal system steam exhaust piping to auxiliary vapour purge interim main pipe pipe
Road (carbon steel material), 33 4 take out pipeline, and 34 4 are evacuated to auxiliary steam pipe road, and 35 steam turbine pre-warm pipelines, 36 is cold again to pipeline, 37 small machines
Low-pressure admission pipeline, 38 auxiliary vapour headers, 39 small machine debugging steam pipe roads, 40 first pipelines, 41 second pipes, 42 axle envelopes purging system
System, 43 gland seal system steam exhaust piping, 44 start jet chimney.
Embodiment
It is noted that described further below is all exemplary, it is intended to provides further instruction to the application.It is unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As background technology is introduced, the deficiencies in the prior art, in order to solve technical problem as above, this Shen
It please propose the auxiliary vapour purging system not restricted before a kind of unit starting by steam.
In a kind of typical embodiment of the application, as shown in figure 1, not by the auxiliary of steam restriction before a kind of unit starting
Vapour purging system, including：Auxiliary vapour header, auxiliary vapour header are connected by steam turbine pre-warm pipeline 35 with steam turbine, and auxiliary vapour header is also
It is connected again to pipeline 36 with steam turbine by cold, steam turbine, which is connected with, cold to be purged interim main pipe pipeline to auxiliary vapour again and (use carbon steel
Material) 29；Auxiliary vapour header is connected by auxiliary vapour to axle envelope pipeline with axle envelope purging system, and auxiliary vapour header passes through auxiliary vapour to oxygen-eliminating device
Pipeline is connected with oxygen-eliminating device, and auxiliary vapour header is evacuated to auxiliary steam pipe road by four and is connected with oxygen-eliminating device, and oxygen-eliminating device is connected with four and takes out pipeline,
Auxiliary vapour to oxygen-eliminating device pipeline and four, which takes out pipeline and take out pipeline temporary pipeline by auxiliary vapour to oxygen-eliminating device pipeline to four, (uses carbon steel material
Matter) 31 connections, four take out pipeline by small machine low-pressure admission pipeline 37 and be connecteds that cold again extremely the interim main pipe pipeline 29 of auxiliary vapour purging connects
Connect.
Above-mentioned purging system, power plant's Auxiliary Steam pipeline cloth is taken into full account before unit Auxiliary Steam purging
Put, all auxiliary vapour users are only connected together carry out steam blowing by main pipe in the confined space, not only simplify interim pipe
Road is arranged, more disposably can all have been blown all auxiliary steam users in steam turbine side when auxiliary steam purges, and saves a large amount of steam
Vapour.
Small machine low-pressure admission pipeline purges interim main pipe pipe by the first pipeline 40 with small machine high-pressure admission pipeline to auxiliary vapour
Road (carbon steel material) 28 connects；
In order to facilitate control, set four to be evacuated to the small machine non-return flaps 25, four of A in the first pipeline 40 and be evacuated to the small electromechanical dynamic isolation of A
The door small machine high-pressure admission electric isolating valves 13 of 22 and A.
The small machine low-pressure admission pipeline is also purged interim by second pipe 41 and small machine high-pressure admission pipeline to auxiliary vapour
Main pipe pipeline connects；Setting four to be evacuated in second pipe 41, the small machine non-return flaps 26, four of B are evacuated to the small machine electric isolating valves 23 of B and B is small
Machine high-pressure admission electric isolating valve 14.
The auxiliary vapour header is connected with small machine debugging steam pipe road 39, and small machine debugging is used between the pipeline of steam pipe road 39 and first
Auxiliary vapour header is provided with to the manual isolating door 15 of the small machines of A and auxiliary vapour header to the small machine non-return flaps 16 of A.
The auxiliary vapour header is connected with small machine debugging steam pipe road, and small machine debugging is set between steam pipe road and second pipe
There is auxiliary vapour header to the manual isolating door 19 of the small machines of B and auxiliary vapour header to the small machine non-return flaps 20 of B, non-return flap is used to prevent to steam after opening
Vapour reverse flow.
The auxiliary vapour header is connected with starting jet chimney 44, is started jet chimney 44 and is connected with starting trouble or heat engine,
Or start jet chimney and connected with old factory's auxiliary steam pipeline；
Startup jet chimney is provided with to auxiliary vapour header electrically operated gate 1 starting jet chimney 44.
The axle envelope purging system 42 purges interim main pipe pipeline (carbon steel material by gland seal system steam exhaust piping 43 to auxiliary vapour
Matter) 32 interim main pipe pipeline communication is purged to auxiliary vapour again with cold, form exhaust outlet after UNICOM communicates with air.
It is described cold again to the interim main pipe pipeline of auxiliary vapour purging provided with the interim low-lying place's drain water piping of the main pipe (use of auxiliary vapour purging
Carbon steel material) 30, auxiliary vapour purges the interim low-lying place's drain water piping of main pipe and is provided with the hydrophobic manually operated door 27 of temporary pipeline.
Described four, which are evacuated to auxiliary steam pipe road, is evacuated to auxiliary vapour header manually operated door 12 and four provided with four and is evacuated to auxiliary vapour header non-return flap 11；
Steam turbine pre-warm pipeline is provided with auxiliary vapour header to the manual isolating door 18 of steam turbine pre-warm pipeline；It is cold be provided with again to pipeline it is cold again to auxiliary
It is the manual isolating door 17 of vapour header, cold again to auxiliary vapour header non-return flap 21 and cold again to auxiliary vapour header electric isolating valve 24.
In auxiliary vapour to oxygen-eliminating device pipeline from auxiliary vapour header to being sequentially provided with electricity before auxiliary vapour header to oxygen-eliminating device oxygen-eliminating device
Door 5, auxiliary vapour header to electrically operated gate after oxygen-eliminating device 6 and auxiliary vapour header are moved to oxygen-eliminating device non-return flap 3, auxiliary vapour to oxygen-eliminating device pipeline to four
Take out pipeline temporary pipeline and set four to be evacuated to the oxygen-eliminating device fast valve 9 and four that draws gas and be evacuated to oxygen-eliminating device non-return flap 10；Debug and use in small machine
Steam pipe road sets auxiliary vapour header to small machine debugging vapour manually operated door 8；Auxiliary vapour header is set gradually to axle in auxiliary vapour to axle envelope pipeline
Envelope system electrically operated gate 6 and auxiliary vapour header are to gland seal system non-return flap 7.
When Auxiliary Steam purges：
The first step confirms that starting jet chimney to auxiliary vapour header electrically operated gate 1 closes；
Second step, confirm that four are evacuated to oxygen-eliminating device non-return flap 10, four are evacuated to auxiliary vapour header non-return flap 11, cold again to auxiliary vapour header
Non-return flap 21, it is counter to fill and remove valve element, confirm that auxiliary vapour header is inverse to gland seal system to oxygen-eliminating device non-return flap 3, auxiliary vapour header
Only door 7, auxiliary vapour header to the small machine non-return flaps 16 of A, for auxiliary vapour header to the small machine non-return flaps 20 of B, four are evacuated to the small machine non-return flaps 25 of A, and four
The small machine non-return flaps 26 of B are evacuated to, have removed valve element；
3rd step, confirmation gland seal system enters steam exhaust piping, and all filter screens of short circuit have removed；
4th step, confirm the system installation as shown in upper figure；
5th step confirms that remaining all electronic and manually-operated gate operates normally in upper figure；
All draining valves of the 6th step elder generation formal system of standard-sized sheet and the hydrophobic manually operated door 27 of temporary pipeline, then gradual standard-sized sheet system
In remaining other electrically operated gates and manually operated door；
7th step, it is crack to open dynamic jet chimney to auxiliary vapour header electrically operated gate 1 to whole system progress heating coil；
8th step, steam drain and all tube wall temperatures are tested：Treat that steam drain and all tube wall temperatures are all higher than 200
DEG C when system heating coil terminate, fully closed auxiliary vapour header to oxygen-eliminating device bypasses electrically operated gate 2, and auxiliary vapour header is auxiliary to electrically operated gate before oxygen-eliminating device 5
Vapour header is to gland seal system electrically operated gate 6, and for auxiliary vapour header to small machine debugging vapour manually operated door 8, four are evacuated to auxiliary vapour header manually operated door 12,
It is cold again to the manual isolating door 17 of auxiliary vapour header, auxiliary vapour header to the manual isolating door 18 of steam turbine pre-warm pipeline；
9th step is purged, each branch road purges 3-5 to each branch road successively by controlling the valve that the 8th step is closed
Secondary, purging 10 minutes or so, range estimation steam drain steam free from admixture are taken out of as purging completion every time.
The preferred embodiment of the application is the foregoing is only, is not limited to the application, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
Claims (10)
- A kind of 1. auxiliary vapour purging system not restricted before unit starting by steam, it is characterised in that including：Auxiliary vapour header, auxiliary vapour header are connected by steam turbine pre-warm pipeline with steam turbine, and auxiliary vapour header is also by cold again to pipeline It is connected with steam turbine, steam turbine is connected with cold again to the interim main pipe pipeline of auxiliary vapour purging；Auxiliary vapour header passes through axle envelope pipeline and axle Purging system connection is sealed, auxiliary vapour header is connected by auxiliary vapour to oxygen-eliminating device pipeline with oxygen-eliminating device, and auxiliary vapour header is evacuated to auxiliary by four Steam pipe road is connected with oxygen-eliminating device, and oxygen-eliminating device is connected with four and takes out pipeline, and auxiliary vapour to oxygen-eliminating device pipeline and four takes out pipeline by auxiliary vapour extremely Oxygen-eliminating device pipeline to four take out pipeline temporary pipeline connection, four take out pipeline by small machine low-pressure admission pipeline and be connected it is cold again extremely auxiliary vapour Purge interim main pipe pipeline connection.
- 2. the auxiliary vapour purging system not restricted before a kind of unit starting according to claim 1 by steam, it is characterised in that The small machine low-pressure admission pipeline purges interim main pipe pipeline with small machine high-pressure admission pipeline to auxiliary vapour by the first pipeline and is connected；Further, set four to be evacuated to the small machine non-return flaps of A in the first pipeline, four be evacuated to the small machine electric isolating valves of A and the small machine high pressures of A Enter vapour electric isolating valve.
- 3. the auxiliary vapour purging system not restricted before a kind of unit starting according to claim 1 by steam, it is characterised in that The small machine low-pressure admission pipeline also purges interim main pipe pipeline by second pipe and small machine high-pressure admission pipeline to auxiliary vapour and connected Connect；Further, set four to be evacuated to the small machine non-return flaps of B in second pipe, four be evacuated to the small machine electric isolating valves of B and the small machine high pressures of B Enter vapour electric isolating valve.
- 4. the auxiliary vapour purging system not restricted before a kind of unit starting according to claim 2 by steam, it is characterised in that The auxiliary vapour header is connected with small machine debugging steam pipe road, and small machine debugging is joined with auxiliary vapour is provided between steam pipe road and the first pipeline Case is to the manual isolating door of the small machines of A and auxiliary vapour header to the small machine non-return flaps of A.
- 5. the auxiliary vapour purging system not restricted before a kind of unit starting according to claim 3 by steam, it is characterised in that The auxiliary vapour header is connected with small machine debugging steam pipe road, and small machine debugging is joined with auxiliary vapour is provided between steam pipe road and second pipe Case is to the manual isolating door of the small machines of B and auxiliary vapour header to the small machine non-return flaps of B.
- 6. the auxiliary vapour purging system not restricted before a kind of unit starting according to claim 1 by steam, it is characterised in that The auxiliary vapour header is connected with starting jet chimney, is started jet chimney and is connected with starting trouble or heat engine；Further, jet chimney is being started provided with startup jet chimney to auxiliary vapour header electrically operated gate.
- 7. the auxiliary vapour purging system not restricted before a kind of unit starting according to claim 1 by steam, it is characterised in that The axle envelope purging system purges interim main pipe pipeline by gland seal system steam exhaust piping to auxiliary vapour and faced again to auxiliary vapour purging with cold When main pipe pipeline communication, exhaust outlet is formed after UNICOM and is communicated with air.
- 8. the auxiliary vapour purging system not restricted before a kind of unit starting according to claim 1 by steam, it is characterised in that It is described cold interim provided with the interim low-lying place's drain water piping of main pipe of auxiliary vapour purging, auxiliary vapour purging to the interim main pipe pipeline of auxiliary vapour purging again The low-lying place's drain water piping of main pipe is provided with the hydrophobic manually operated door of temporary pipeline.
- 9. the auxiliary vapour purging system not restricted before a kind of unit starting according to claim 1 by steam, it is characterised in that Described four, which are evacuated to auxiliary steam pipe road, is evacuated to auxiliary vapour header manually operated door and four provided with four and is evacuated to auxiliary vapour header non-return flap；Further, steam turbine pre-warm pipeline is provided with auxiliary vapour header to the manual isolating door of steam turbine pre-warm pipeline；Further, it is cold be provided with again to pipeline it is cold again to the manual isolating door of auxiliary vapour header, cold again to auxiliary vapour header non-return flap and cold Again to auxiliary vapour header electric isolating valve.
- 10. the auxiliary vapour purging system not restricted before a kind of unit starting according to claim 9 by steam, its feature exist In, auxiliary vapour to oxygen-eliminating device pipeline from auxiliary vapour header to be sequentially provided with oxygen-eliminating device auxiliary vapour header to electrically operated gate before oxygen-eliminating device, Auxiliary vapour header to electrically operated gate after oxygen-eliminating device and auxiliary vapour header to oxygen-eliminating device non-return flap, auxiliary vapour to oxygen-eliminating device pipeline to four is taken out pipeline and faced Shi Guandao sets four to be evacuated to the oxygen-eliminating device fast valve and four that draws gas and is evacuated to oxygen-eliminating device non-return flap；Further, auxiliary vapour header is set gradually to gland seal system electrically operated gate and auxiliary vapour header to axle envelope in auxiliary vapour to axle envelope pipeline System non-return flap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720800678.7U CN206997264U (en) | 2017-07-04 | 2017-07-04 | A kind of auxiliary vapour purging system not restricted before unit starting by steam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720800678.7U CN206997264U (en) | 2017-07-04 | 2017-07-04 | A kind of auxiliary vapour purging system not restricted before unit starting by steam |
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| CN201720800678.7U Expired - Fee Related CN206997264U (en) | 2017-07-04 | 2017-07-04 | A kind of auxiliary vapour purging system not restricted before unit starting by steam |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107150055A (en) * | 2017-07-04 | 2017-09-12 | 山东中实易通集团有限公司 | The auxiliary vapour purging system and method not restricted before a kind of unit starting by steam |
| CN111744901A (en) * | 2020-07-17 | 2020-10-09 | 三门核电有限公司 | Method for jointly purging auxiliary steam of nuclear power station and steam pipeline of steam turbine shaft seal |
-
2017
- 2017-07-04 CN CN201720800678.7U patent/CN206997264U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107150055A (en) * | 2017-07-04 | 2017-09-12 | 山东中实易通集团有限公司 | The auxiliary vapour purging system and method not restricted before a kind of unit starting by steam |
| CN111744901A (en) * | 2020-07-17 | 2020-10-09 | 三门核电有限公司 | Method for jointly purging auxiliary steam of nuclear power station and steam pipeline of steam turbine shaft seal |
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